I'm
Guessing it's 15-20 lbs. The weight is all in the head making it bottom heavy. It head is aluminum but outer shell is cast iron or a heavier duty metal.
If you use it as a floor polisher can don't use it like a zipp brush you will be fine. Something that heavy spinning is going to come out of your hands easily.
I don't imagine you would have any issues. My foot is fine now.